Please read problem $2$ discussed in class. If the repair had not been performed in the bulkhead $($with a single lap riveted joint$)$ and a double lap riveted joint existed as was previously designed. Assuming now a fatigue failure started at one of the rivet holes of $12$mm dia. $($in one row$)$ what would be the cycles to failure?. Would this design be adequate to withstand a $20$ year life $($assuming flight operations of once per day